What's new?

• Update Dutch translation by @Stephan-P in #1335
• Add minimal AVIF support by @tats-u in #1342
• From now on, binaries will be digitally signed with the entity called "N-Tech" (it's my company, easier to get a new certificate with an entity).

Fixed:

• Fix for some small issues with the notification icon.
• Fix for issues detecting the Gifski version.